KS3 · Biology

Animal adaptations to environment

A polar bear's thick coat keeps it warm. A camel's thin coat keeps it cool. Same body part, opposite jobs, so what decides which one an animal gets?

Biology · Adaptations

Has it, or does it?

Pick an adaptation, then pick the kind it belongs to.

Still to sort

Physical adaptation (0)

A feature of the animal's body: something it HAS.

Where the line is: If it is part of the animal's body, or something its body makes, it is physical.

Behavioural adaptation (0)

The way the animal behaves: something it DOES.

Where the line is: If it is a way the animal behaves, it is behavioural, even though it helps the animal just as much as a body feature would.

15 of 15 still to sort.

An adaptation is a feature that helps an animal live in a particular place. There are two kinds: physical (a body feature the animal has) and behavioural (the way the animal behaves). Sort the adaptations below, then read why each one belongs.

Watch out: Ask yourself one question: could I point to it on the animal's body, or is it something the animal does?

Same body part, opposite jobs

Polar bear (cold Arctic)vsCamel (hot desert)

Look at what each place asks of the animal. That is what decides the feature.

Focus

Coat

Polar bear (cold Arctic)

Thick, white and greasy: the thickness keeps it warm, the white helps it creep up on prey, and the grease helps it dry quickly.

Camel (hot desert)

Thin, so it keeps the camel cool in the day, yet thick enough to keep it warm at night.

The insight

Both coats are answers to a temperature problem, but the two places set different problems, so the answers look opposite.

Fat

Polar bear (cold Arctic)

A fat layer under the skin helps keep it warm.

Camel (hot desert)

A hump on its back. What is inside it is the next puzzle.

Ears and eyes

Polar bear (cold Arctic)

Small ears help to reduce heat loss.

Camel (hot desert)

Long eyelashes keep sand out of the eyes and shade them.

Feet

Polar bear (cold Arctic)

Pads on the bottom of the feet give insulation and grip.

Camel (hot desert)

Wide hooves spread the camel's mass over a large area, so it does not sink into the sand.

Mouth and teeth

Polar bear (cold Arctic)

Sharp claws and teeth help it catch, grip and eat its prey.

Camel (hot desert)

Teeth and thick lips help it eat thorny plants.

Predict, then check

Commit to an answer first. Guessing wrong here is how this one sticks.

A camel can go for long periods without drinking, and the hump is the clue. What is inside the hump?

Behaviours and the problems they solve

What is each behaviour for?

For each behaviour, tick the problems it is used to solve in this lesson. Then check the grid.

Being nocturnal
Migrating
Hibernating

Biodiversity

What does biodiversity mean?

Which of these is closest to what you think biodiversity means?
How sure are you?

From habitat to biodiversity

?

Reason it through

Why does destroying habitats reduce biodiversity?

Link 1 of 4

First link · your turn

What are habitats destroyed or changed for?

2
Locked — reveal the link above first
3
Locked — reveal the link above first
4
Locked — reveal the link above first

WHAT YOU'VE LEARNED

A quick recap of today's lesson.

Why the same body part can do opposite jobs, and why some of the best survival tricks aren't body parts at all.

What you need to know

  • An adaptation is a feature that helps an organism live in a particular place.
  • Physical adaptations are body features an animal has; behavioural adaptations are things an animal does, such as being nocturnal, migrating and hibernating.
  • The same body part can do opposite jobs in different places: a polar bear's thick coat keeps it warm, while a camel's thin coat keeps it cool in the day.
  • A camel's hump is fat, not water, and fat can be made into water through respiration.
  • Biodiversity is the range of different species in a place; habitat destruction can cause extinction, and conservation protects biodiversity.

The big picture

Animals survive because of adaptations: features and behaviours that suit the place they live. Some are physical (a body feature an animal has) and some are behavioural (something an animal does), like being nocturnal, migrating or hibernating. When humans destroy habitats, species can be lost for good and biodiversity falls, which is why conservation matters.

Key points

1An adaptation helps an animal survive in a particular place, so always link a feature to its environment.
2Physical = a body feature it has. Behavioural = something it does.
3Migration (travelling to a warmer country) and hibernation (being dormant through winter) are two ways of dealing with winter.
4Nocturnal animals are active at night, which helps them avoid predators, competition and the heat of the day.
5Biodiversity is the range of species, not the number of organisms; extinction is the permanent loss of a species.

Worked example

Problem

A hummingbird has a long, thin beak that reaches nectar deep inside flowers. Is this a physical or a behavioural adaptation, and what problem does it solve?

⚠ Watch out

Easy trap: calling a feature 'good' without saying where. A thick coat suits the cold Arctic, a thin coat suits the hot desert, so a feature is only an adaptation to its own place.

🧠

Memory hook

Has or does? A body part is something it HAS (physical); an action is something it DOES (behavioural). And for winter: migrate means leave, hibernate means sleep.

✓

Check yourself

A dormouse eats lots at the end of summer, then spends the cold months dormant. Is that physical or behavioural, and how is a swallow's answer to winter different?

Flashcards

(13)
What is an adaptation?
A feature that helps an organism live in a particular place.
What are the two main types of adaptation in animals?
Physical (body features) and behavioural (the ways animals behave).
How do a polar bear's small ears and fat layer help it?
Small ears reduce heat loss; a thick coat and a fat layer under the skin help keep it warm.
What is a camel's hump made of, and why does that matter?
Fat, not water. Fat can be made into water through respiration, so a camel can go for long periods without drinking.
Why do a camel's wide hooves help in the desert?
They have a large area that spreads out the camel's mass, so it does not sink into the sand.
What does nocturnal mean, and how does it help?
Active at night. It helps animals avoid predators, avoid competition for food and water, avoid the heat of the day and conserve water.
What is migration?
Escaping winter by travelling to warmer countries.
What is hibernation?
Being dormant during the cold winter months, living off fat built up by eating lots at the end of summer.
Where are the eyes of a predator and of its prey, and why?
Predators have eyes at the front pointing forwards for good eyesight. Prey tend to have eyes on the sides of the head, giving a wider field of view.
Why do animals need adaptations to the plants in their habitat?
Plants provide animals with food, shelter and places to reproduce.
What is biodiversity?
The range of different living species that live in a place (not the number of organisms).
What is extinction?
The permanent loss of a species.
What is conservation, and what are three ways of doing it?
Protecting biodiversity and the environment: nature reserves, restoring habitats such as reforestation, and breeding programmes in zoos.

Tap any card to flip it, or use Study as deck to go through them one at a time. In the full lesson these run as a spaced-repetition deck — you rate each card Hard, Good or Easy and the tricky ones keep coming back until they stick.

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How this lesson was checked. This KS3 Biologylesson was published through Lightbulb Learning's human-designed editorial process — the educational standards, accuracy rules and publication checks it must pass were authored and approved by Philip Halpin. It passed subject-specific assessment, automated educational checks and technical publication verification before going live (publication checks completed 2 October 2026). Published pages are monitored, human spot-checking is ongoing across the lesson library, and anything found wrong is corrected or withdrawn. How our lessons are made and checked. Spotted a mistake? Email hello@lightbulblearning.co and we'll review it.